Buried steam pipes
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There is currently a DN200 steam pipeline that needs to be buried as it passes through the factory entrance. How should buried steam pipelines be handled in such cases? How to handle hydrophobicity and stress? What issues need to be considered regarding buried pipelines?
This post was last edited by lovelife1997 on 2019-10-14 09:42. Necessary anti-corrosion treatment should be carried out before laying the pipes in the trench – the trench dug for the road should be at least 60 centimeters deep to ensure resistance to crushing and prevent leaks that could cause injury; the sides of the trench should be reinforced with cement – the pipes are then placed in the trench, welded, and pressure-tested to check for leaks – a cement cover plate is placed over the trench – the soil is backfilled and compacted to level the surface of the road – pipeline marker posts are installed along the roadside indicating the type of fluid carried by the pipes, their depth, the name of the responsible company, and emergency contact numbers.
This post was last edited by Wise Ming on 2019-10-14 at 10:55. Buried steam pipes generally use steel-clad steel pipes, with the outer tube coated in epoxy coal tar pitch material and the inner tube insulated; allowance is provided for thermal strain at the elbows.
This post was last edited by lovelife1997 on 2019-10-14 at 19:27. Yours is too professional; it’s good and well-executed, but most smaller organizations may not be willing to adopt it due to the high overall cost – it’s a preferred option for some organizations only. Municipal units also use it quite frequently. However, for the installation of pipelines over short distances in certain areas, the approach I described is generally used. It is suitable for organizations that desire good results, do not want any hassle, have a limited budget, and also need easy access for future inspections and repairs in case of leaks in the pipelines. Different companies choose different solutions; the one that suits them is the best.
How to handle steam pipeline traps in buried installations? ?
Are there any relevant standard references?
Are you sure you mean the steam pipeline?
Refer to CJJT 104-2014
How long is the distance? For short lengths, use a steel sleeve around the steel pipe; just make the area at the elbow of the vertical pipe larger to provide some expansion space. Just flip the opening at the bottom of the hydrophobic inner tube upward; there is pressure, so it’s easy to pull it out of the ground for hydrophobic treatment. If it’s long, fixation at the bottom is required; for the steel-in-steel design, there are dedicated fixation sections, and axial compensators also need to be added inside.
This design is good; it’s similar to what we’ve done
Sorry for the late reply. The buried pipeline is 40 meters long – is it possible to do this?